The first was a "flip card", for my Dad.
Using Spellbinders dies and my Cuttlebug, I learned how to create this cut-out style thanks to the delightful Christina from Card-Making-Magic.com
The back of the card, showing the half-cut but fully-embossed flip:
Dakotah made sure I was following the directions properly... and mischievously ran away with the green and silver button for Dad's card when I wasn't looking. Luckily I found a second identical one in my button jar! (And I did find her "prize" later - after stepping on it in bare feet, natch).
The second card was for my daughter and is called a "Double Slider" card, a cool effect taught to me by the oh-so talented Darlene DeVries at DarleneDesign.com.
Since I one of her gifts was an antique birdcage I convinced the Antique Mall to sell to me (it was a display piece that wasn't for sale), I thought the birdcage motif was appropriate.
When you pull on the right tab, the left one automatically pulls out at the same time. Push it in, they both slide inside... a pretty cool trick created with a strip of plastic bag! This was mounted on a regular card, so I could write a message and sign the inside.
I was quite proud of myself that it actually worked!
If you're a card maker, I would highly recommend these two ladies' YouTube channels - they are a pleasure to watch and learn from!